<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    .box {
        width: 80px;
        height: 80px;
        background-color: red;
        margin: 20px 15px;
    }

    .container {
        display: flex;
        flex-wrap: wrap;
        margin: 0 auto;
        width: 100%;
        justify-content: center;
        text-align: left;
        word-wrap: break-word;

    }
    .container_item{
        
        display: flex;
        flex-wrap: wrap;
        margin: 0 auto;
        width: 100%;
        justify-content: flex-start;
        text-align: left;
        /* word-wrap: break-word; */
    }
</style>

<body>
    <div class="container">
        <div class="container_item">
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>

            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
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            <div class="box"></div>
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            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>

            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
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            <div class="box"></div>
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            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>
            <div class="box"></div>

            <div class="box"></div>
            <div class="box"></div>
        </div>

    </div>
</body>

</html>